Hello,
I would like to code a dynamic function (in my cart page) showing this message: Spend XX€ more until free delivery.
I am able to set a static (hard coded) delivery threshold (shipping_value) but I am not able to set this threshold as user input through schema (not sure how to access to the schema setting).
Here below is my code where I left both static and dynamic functions.
Thanks for your help 
{{ 'component-cart.css' | asset_url | stylesheet_tag }}
{{ 'component-totals.css' | asset_url | stylesheet_tag }}
{{ 'component-price.css' | asset_url | stylesheet_tag }}
{{ 'component-discounts.css' | asset_url | stylesheet_tag }}
<div class="page-width{% if cart == empty %} is-empty{% endif %}" id="main-cart-footer" data-id="{{ section.id }}">
<div>
<div class="cart__footer">
{%- if section.settings.show_cart_note -%}
<cart-note class="cart__note field">
<label for="Cart-note">{{ 'sections.cart.note' | t }}</label>
<textarea class="text-area text-area--resize-vertical field__input" name="note" id="Cart-note" placeholder="{{ 'sections.cart.note' | t }}">{{ cart.note }}</textarea>
</cart-note>
{%- endif -%}
<div class="cart__blocks">
{% for block in section.blocks %}
{%- case block.type -%}
{%- when '@app' -%}
{% render block %}
{%- when 'subtotal' -%}
<div class="js-contents" {{ block.shopify_attributes }}>
<div class="totals">
<h3 class="totals__subtotal">{{ 'sections.cart.subtotal' | t }}</h3>
<p class="totals__subtotal-value">{{ cart.total_price | money_with_currency }}</p>
</div>
<div>
{%- if cart.cart_level_discount_applications.size > 0 -%}
<ul class="discounts list-unstyled" role="list" aria-label="{{ 'customer.order.discount' | t }}">
{%- for discount in cart.cart_level_discount_applications -%}
<li class="discounts__discount discounts__discount--end">
{%- render 'icon-discount' -%}
{{ discount.title }}
(-{{ discount.total_allocated_amount | money }})
</li>
{%- endfor -%}
</ul>
{%- endif -%}
</div>
<small class="tax-note caption-large rte">
{%- if cart.taxes_included and shop.shipping_policy.body != blank -%}
{{ 'sections.cart.taxes_included_and_shipping_policy_html' | t: link: shop.shipping_policy.url }}
{%- elsif cart.taxes_included -%}
{{ 'sections.cart.taxes_included_but_shipping_at_checkout' | t }}
{%- elsif shop.shipping_policy.body != blank -%}
{{ 'sections.cart.taxes_and_shipping_policy_at_checkout_html' | t: link: shop.shipping_policy.url }}
{%- else -%}
{{ 'sections.cart.taxes_and_shipping_at_checkout' | t }}
{%- endif -%}
</small>
</div>
{%- comment -%} Static function {%- endcomment -%}
{%- comment -%}
{%- when 'threshold' -%}
<div class="promo-msg-container">
{% assign shipping_value = 6000 %}
{% assign cart_total = cart.total_price %}
{% assign shipping_value_left = shipping_value | minus: cart_total %}
<p class="promo-msg-text">
{% if shipping_value_left > 0 %}
Spend {{ shipping_value_left | money }} more to get free delivery<br>
{% else %}
Free delivery
{% endif %}
</p>
</div>
{%- endcomment -%}
{%- comment -%} End Static function {%- endcomment -%}
{%- comment -%} Dynamic function {%- endcomment -%}
{%- when 'threshold' -%}
<div class="promo-msg-container">
{% assign shipping_value = section.settings.threshold1 %}
{% assign cart_total = cart.total_price %}
{% assign shipping_value_left = shipping_value | minus: cart_total %}
<p class="promo-msg-text">
{% if shipping_value_left > 0 %}
Spend {{ shipping_value_left | money }} more to get free delivery<br>
{% else %}
Free delivery
{% endif %}
</p>
</div>
{%- comment -%} End Dynamic function {%- endcomment -%}
{%- else -%}
<div class="cart__ctas" {{ block.shopify_attributes }}>
<noscript>
<button type="submit" class="cart__update-button button button--secondary" form="cart">
{{ 'sections.cart.update' | t }}
</button>
</noscript>
<button type="submit" id="checkout" class="cart__checkout-button button" name="checkout"{% if cart == empty %} disabled{% endif %} form="cart">
{{ 'sections.cart.checkout' | t }}
</button>
</div>
{%- if additional_checkout_buttons -%}
<div class="cart__dynamic-checkout-buttons additional-checkout-buttons">
{{ content_for_additional_checkout_buttons }}
</div>
{%- endif -%}
{%- endcase -%}
{% endfor %}
<div id="cart-errors"></div>
</div>
</div>
</div>
</div>
{% javascript %}
class CartNote extends HTMLElement {
constructor() {
super();
this.addEventListener('change', debounce((event) => {
const body = JSON.stringify({ note: event.target.value });
fetch(`${routes.cart_update_url}`, {...fetchConfig(), ...{ body }});
}, 300))
}
}
customElements.define('cart-note', CartNote);
{% endjavascript %}
<script>
document.addEventListener('DOMContentLoaded', function() {
function isIE() {
const ua = window.navigator.userAgent;
const msie = ua.indexOf('MSIE ');
const trident = ua.indexOf('Trident/');
return (msie > 0 || trident > 0);
}
if (!isIE()) return;
const cartSubmitInput = document.createElement('input');
cartSubmitInput.setAttribute('name', 'checkout');
cartSubmitInput.setAttribute('type', 'hidden');
document.querySelector('#cart').appendChild(cartSubmitInput);
document.querySelector('#checkout').addEventListener('click', function(event) {
document.querySelector('#cart').submit();
});
});
</script>
{% schema %}
{
"name": "t:sections.main-cart-footer.name",
"class": "cart__footer-wrapper",
"settings": [
{
"type": "checkbox",
"id": "show_cart_note",
"default": false,
"label": "t:sections.main-cart-footer.settings.show_cart_note.label"
}
],
"blocks": [
{
"type": "subtotal",
"name": "t:sections.main-cart-footer.blocks.subtotal.name",
"limit": 1
},
{
"type": "buttons",
"name": "t:sections.main-cart-footer.blocks.buttons.name",
"limit": 1
},
{
"type": "threshold",
"name": "Seuil",
"settings": [
{
"type": "text",
"id": "threshold1",
"default": "60",
"label": "Seuil"
}
]
},
{
"type": "@app"
}
]
}
{% endschema %}